Pressing pad



July 2. 1940- c. J. CRARY 2,206,836

PRESSING PAD Filed nay 24, 1958 C. JOHN CQHEY.

/ ATTORNEY.

Patented July Z, 1940 @PATENT NOFFICE PRESSING PAD i `Clarence John`Crary, Chicago, Ill., assignor to George Beary, Chicago, Ill.

Application May 24, 1938, Serial No. 209,669

4 Claims.

n dustries.

A particular object of the invention is to pro` Vide a pressing pad soconstructed that it will n stand up for a long period under constantmain present day use. `The machines are equipped with pressure renderingmeans that exceed the chine pressures as employed in pressing machinespressure possible to beexerted by the human operator of a pressingmachine and the `result of these high pressures applied continuouslywill V soon break down a pad that is not" constructed especially towithstandthem.

` It is an important object of the invention therefore, to so constructthe pad that it will stand up under pressure for a reasonable length oftime, will be subjected to high pressure during manufacture so that the`strands of the material employed in makingthe pad will not be furthercompressed by the pressing machine, and the pad so constructed that itis heavier along its longitudinal center and stronger through `itsmid-portion than pads in` present day use.`

A further object of the invention is to construct the entire pad out ofthree padsthat are made up individually and each subjected to pressureand thereafter combined with each other under pressure and wrapping toresist thepressure encountered in the pressing machines. I have foundthat by employing steel wool in ribbon form,` and winding the samelaterally to form the central or inner pad, that better results areobtained due to the fact that the ribbons are on edge and wound closelyto give a solid, yet yieldmade, which are called outer or crown pads.The` crown pads have disposed between them a pad made by laying theribbon strand of steel laterally on edge and back and forth to ll thedie, and then piling or wrapping the strand lengthwise therearound tobring the center of the pad higher,

the combination of three pads being then united under pressure tocomplete the pad construction which may be placed in a fabric covering.

With these and other objects in'view, my invention comprises the methodof construction and articleof manufacture as hereinafter described andparticularly illustrated in the accompanying drawing, in which:

Figure 1` is a plan View illustrating the first step of" the inventionand formation of one of the crown or outer pads, v

Figure 2 isla View similar to Figure l and shows the method ofconstructing the other crown pad which is the same as illustrated inFigure 1,

Figure 3 isa view showing the two steps of construction employed inmaking the center pad.

Figure 4 is a view showing the finished pad and part of the fabric coverused therewith,

Figure 5 is a view in side elevation showing the three pads in theVfinal formation ready to `be used in the pressing machine,

Figure 6 isa view in perspective of a `ribbon.

strand of steelwool showing how it appears commercially and as used inthe construction of the center pad, i i Figure 7 is a transverse sectionof either of the pads illustrated in Figures 1 and 2 and showing indiagram the appearance of the pad before being subjected to pressure,

Figure 8 is a view similar to Figure 7 showing the" appearance` of thecentral or intermediate pad as illustrated in Figure 3, and

Figure 9 `is a View in cross section through the n finished padshowingthe three layers or individual pads united in one. i

Referring to the drawing in detail, I0 indicates a ribbon of steel woolas manufactured and consisting of many strands of the Wool, the rib--bon coming in various lengths and in itself not material to theinvention except as employed in my novel process wherein it is laidlongitudinally and on edge back and. forth as illustrated in Figures 1and 2 in a suitable die to form a pile, the steel wool being in the formof the ribbon or strand shown in Figure 6 and laid on edge and passedback and forth lengthwise to form the pad mass as at Il. The mass isthen compressed under approximately 100 pounds pressure to the squareinch to shape it into padform, the separate padsv as shown in Figures 1and 2 and indicated as outer pads I2 and I3 being similarly formed andreferred to as crown or outer pads. In Figure '7, the outline positionindicates the thickness of the mass Il before compressionto form thecrown pad.`

In Figure 3, the center pad I1 of a finished pad structure is formed byfirst laying the ribbon I0 back and forth on edge crosswise of the die`form to provide a mass of the steel wool, the strands of which are onedge as at IB to give a substantial body to the pad. After the pad formfr i is so constructed, the steel wool in ribbon form I0 is woundlengthwise about the mass in flat position, that is the strand of ribbonwool is flat wound about the mass to form. the body of the center padil'. The strands are so laid that the longitudinal vcenter of the pad iscovered with more of the wool than the outer edges thereof and the padis consequently thicker through its middle than along its outer edges.,This laying ofthe wool to form the thickened center is indicated as atI8 in Figures 3 and 8. In this way more pad body is provided where thegreatest wear occurs and the piling of the steel wool along i the centerto form a thickened portion in the pad lengthwise thereof prevents highand low spots and maintains the pad at equal thickness, and permits thealternate use of opposite sides of the pad for even wear. After thewrapping as at I8,

the mass is compressed from the outline position in Figure 8 to the fullline indication.

Thus is provided three pads, a center pad I1 (Figures 3 and 8) and twoouter pads I2 and I3 (Figuresl, 2 and 9). The center. pad is then placedbetween the outer pads I2 and I3 and the Whole assembly placed under apressure suicient to unite the three pads in unitary construction. Thepressureemployed in compressing thek center pad il alone may be 200pounds per square inch and the pressure used in compressing all threepads l2, I3 and Il to complete the operation may be 150 pounds .persquare inch. These working pressures are indicative of what can be usedto make the pad properly, but they can andare Varied for padconstructions for use in different industries and can accordingly bevaried as desired.

After the pad is completed, it may be placed inra fabric covering. Whenthe three pads are combined and before pressure may be againappliedthereto, the unit is wrapped about with strands ISA of the steelwool as illustrated in Figure fl. The die that is employed in thecompression pinches the edges of the pads and provides smooth. edges andsmooth surfaces to the pad which is usually enclosed as noted in anyWhat I claim is:

1. The method of making a pressing pad consisting in laying separatemasses of steel wool in pad shape, with the strands of the steel woolextending-longitudinally of the pad, compressing the masses to formindividual crown pads, laying another mass of steel woolin pad shapewith the strands of the steel wool extending widthwise and compressingthesame to form a center pad, interposing the center pad between thecrown pads and then subjecting the three pads to pressure to form aunitary structure.

2. The method of making a pressing pad consisting in laying separatemasses of steel wool in pad shape with the strands of the wool extendinglengthwise of the pad and compressing the masses to form two separateidentical outer pads, laying anothermass of steel wool with the strandsof the wool extending longitudinally and laterally of the mass thelongitudinal strands being greater in number about thecentral portion ofthe pad to provide a median section of increased thickness andcompressing the mass to form` a center pad, then interposing the saidcenter pad between the outer pads and subjecting all of them to pressureto form a unitary structure and then enclosing the pad in a fabriccovering.

3. The method of making a pressing pad consisting in laying separatemasses of steel wool in pad shape with the strands of steel woolextending widthwise, compressing the masses to form separate pads,laying another mass of steel wool to form a central pad with strandsthereof extending longitudinally and laterally and compressing saidlatter mass to form a pad and then combining all the pads and subjectingthem to pressure. y

Ll. The method of making. a pressing pad consisting in laying separatemasses of steel wool in pad form with the strands of wood extendingwidthwise, compressing the masses to form separate pads, laying anothermass of steel wool to form a central pad. with strands extendingwidthwise and longitudinally of the pad with the, longitudinal strandsyarrangedto increase the thickness of the pad `along the center thereofand compressing said latter mass and then combining all the pads andsubjecting them to pressure to unite them in a single multi-layer pad.

' C. JOHN CRARY.

